Control method of cooking equipment and cooking equipment

Abstract

The invention relates to the technical field of household appliances, and particularly discloses a control method of cooking equipment, and the control method of the cooking equipment comprises the steps: obtaining environment parameters, preheating power and a cooking mode of the cooking equipment; calculating the temperature change rate of the cooking equipment according to the environment parameters and the preheating power; and adjusting the preheating power of the cooking equipment in real time according to the cooking mode and the temperature change rate until the real-time temperature of the cooking equipment meets the set temperature of the cooking mode. According to the control method of the cooking equipment, the preheating power of the cooking equipment can be dynamically adjusted according to the environment parameters and the preheating power of the cooking equipment and the cooking mode set by the user, and on the premise that the cooking task of the cooking equipment is completed, the preheating time of the cooking equipment is shortened, and energy consumption management of the cooking equipment is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a control method for a cooking device and a cooking device. Background Art

[0002] In the prior art, when using a cooking device such as an oven to cook, preheating the cooking device is a necessary step before the food is officially cooked. However, the cooking devices currently on the market generally have the problem of too long preheating time or too high preheating power, which not only leads to too long overall cooking time of the cooking device, but also increases the energy consumption of the cooking device. Summary of the invention

[0003] In view of this, the present invention provides a control method for a cooking device to solve the technical problems of poor energy consumption management and time management of the cooking device in the prior art.

[0004] In a first aspect, the present invention provides a method for controlling a cooking device, the method comprising: obtaining environmental parameters, preheating power and cooking mode of the cooking device; calculating the temperature change rate of the cooking device according to the environmental parameters and the preheating power; and adjusting the preheating power of the cooking device in real time according to the cooking mode and the temperature change rate until the real-time temperature of the cooking device meets the set temperature of the cooking mode.

[0005] Beneficial effect: The control method of the cooking equipment proposed in this embodiment can dynamically adjust the preheating power of the cooking equipment according to the environmental parameters of the cooking equipment, the preheating power and the cooking mode set by the user, thereby reducing the preheating time of the cooking equipment and realizing energy consumption management of the cooking equipment while completing the cooking task of the cooking equipment.

[0006] Specifically, the control method of the cooking device provided in the embodiment of the present application monitors the temperature change rate inside the cooking device in real time and compares it with the set temperature of the preset cooking mode; then the preheating power of the cooking device is dynamically fine-tuned according to the temperature change trend of the cooking device, so as to ensure that the temperature of the cooking device rises quickly and smoothly to the set value of the preset cooking mode, thereby achieving the goal of ensuring the preheating speed while optimizing the preheating power of the cooking device through an algorithm, thereby reducing the energy consumption of the cooking device and optimizing the preheating time of the cooking device.

[0007] The user inputs the cooking mode corresponding to the cooking ingredients, the cooking mode (cooking ingredients include roast chicken, bread, cake, etc.), the desired preheating temperature and the preheating completion time into the cooking device through the user interface. The cooking device stores a cooking mode database: including cooking parameters of different foods, such as the best preheating temperature, preheating time and ideal cooking temperature of the ingredients.

[0008] In an optional implementation, calculating the temperature change rate of the cooking device according to the environmental parameters and the preheating power specifically includes:

[0009]

[0010] in, represents the temperature change rate, P represents the preheating power, hA(T(t)-T env ) represents the convective heat loss between the cooking equipment and the environment, T(t) represents the real-time temperature, Tenv represents the ambient temperature, P represents the preheating power, V represents the volume of the cooking equipment, ρ represents the air density, cp represents the specific heat capacity of air, h represents the convective heat transfer coefficient, and A represents the surface area of ​​the cooking equipment.

[0011] Beneficial effects: According to the cooking mode and real-time environmental parameters of the cooking equipment, a mathematical model of the temperature rise of the cooking equipment is established, and the mathematical model is used to describe the temperature rise process of the cooking equipment under different cooking modes and real-time environmental parameters.

[0012] Specifically, the mathematical model assumes that the cooking device can be heated uniformly, assumes that the internal temperature of the cooking device is uniformly distributed, and ignores the heat loss of the cooking device, assumes that the heat loss of the cooking device can be ignored, or is handled by boundary conditions, and within a certain range, assumes that the temperature change of the cooking device is linear, and assumes that the heat provided by the heating element of the cooking device is constant.

[0013] In an optional implementation, until the real-time temperature of the cooking device satisfies the cooking mode specifically includes: obtaining the real-time temperature T(t) of the cooking device,

[0014]

[0015] Beneficial effects: Assuming the cooking device is a small oven:

[0016] V=0.1m3、A=0.6m2、P=1500W、T0=20℃、Tenv=20℃、h=10W / m2℃Substitute the above data into the parameters in the above formula:

[0017]

[0018] Simplified:

[0019] T(t)=20+250(1-e -0.4975t )

[0020] This formula can be used to predict the temperature changes of the oven at different time points.

[0021] In an optional embodiment, the control method of the cooking device further includes: adjusting the convection heat transfer coefficient h and the preheating power P by measuring the temperature change curve of the cooking device under different cooking modes.

[0022] Beneficial effects: In practical applications, the various parameters in the above model can be calibrated in real time through experimental data to improve the accuracy of the various parameters in the above model. For example, by measuring the temperature change curve under different cooking modes, the convection heat transfer coefficient h and the preheating power P can be adjusted so that the above model can better fit the actual working data of the cooking equipment.

[0023] In an optional embodiment, adjusting the convection heat transfer coefficient h and the preheating power P specifically includes: initializing parameters: T(0)=T0, t=0; updating the real-time temperature T(t) of the cooking device in each time step △t; solving the change of the real-time temperature T(t) by the explicit Euler method, and stopping the iteration when T(t)≥Ttarget, where Ttarget represents the set temperature of the cooking mode.

[0024] Beneficial effect: According to the prediction result of the real-time temperature of the cooking device, the preheating power output of the cooking device is dynamically adjusted. For example, the cooking device is preheated at the maximum power at the beginning. When the cooking device approaches the set temperature of the cooking mode, the preheating power of the cooking device is reduced to avoid overheating of the cooking device.

[0025] Furthermore, the algorithm of the above model is used to predict the preheating power and preheating time required for the cooking equipment to reach the set temperature. At the same time, it is necessary to take into account the heat dissipation of the cooking equipment and the impact of the ambient temperature on the cooking equipment, so as to achieve the purpose of taking into account the preheating time and energy consumption of the cooking equipment.

[0026] In an optional embodiment, adjusting the preheating power of the cooking device in real time according to the cooking mode and the temperature change rate also includes: obtaining the humidity parameters and air flow parameters of the cooking cavity of the cooking device; and correcting the preheating power in real time according to the humidity parameters and the air flow parameters.

[0027] Beneficial effect: The air flow sensor detects the air flow in the inner cavity of the cooking device. If the temperature of the inner cavity of the cooking device reaches equilibrium, the air flow in the inner cavity is small, which helps to determine the temperature state of the inner cavity. For example, if the cooking device uses the "steaming and baking mode", a humidity sensor is required to determine whether the humidity in the inner cavity reaches the target value, so that the cooking device can work according to the cooking mode selected by the user.

[0028] In an optional embodiment, adjusting the preheating power of the cooking device in real time according to the cooking mode and the temperature change rate also includes: obtaining the preheating time corresponding to the cooking mode; and correcting the preheating power in real time according to the preheating time.

[0029] Beneficial effects: The cooking device adopts PID control, and adopts a proportional-integral-differential (PID) controller to adjust the preheating power of the cooking device according to the deviation between the set temperature and the real-time temperature, so as to ensure that the real-time temperature of the cooking device can stably approach the set temperature;

[0030] Furthermore, cooking equipment can also adopt fuzzy logic control. For more complex cooking mode requirements, a fuzzy logic controller can be used to handle the uncertainty factors in the cooking process, so that the cooking equipment can make decisions that are closer to human intuition.

[0031] In a second aspect, the present invention provides a cooking device, which includes a control device, which includes: an acquisition module for acquiring environmental parameters, preheating power and cooking mode of the cooking device; a calculation module for calculating the temperature change rate of the cooking device based on the environmental parameters and the preheating power; and an adjustment module for adjusting the preheating power of the cooking device in real time according to the cooking mode and the temperature change rate until the real-time temperature of the cooking device meets the set temperature of the cooking mode.

[0032] Beneficial effect: The control method of the cooking equipment proposed in this embodiment can dynamically adjust the preheating power of the cooking equipment according to the environmental parameters of the cooking equipment, the preheating power and the cooking mode set by the user, thereby reducing the preheating time of the cooking equipment and realizing energy consumption management of the cooking equipment while completing the cooking task of the cooking equipment.

[0033] In an optional embodiment, the cooking device also includes: a box body, a cooking cavity is formed inside the box body; a telescopic structure, the telescopic structure is arranged in the box body and can be telescoped in the cooking cavity; a sensor component, the sensor component is arranged in the telescopic structure, and the sensor component includes a temperature sensor, a humidity sensor and an air flow sensor.

[0034] Beneficial effects: The temperature sensor can be used to monitor the internal temperature of the cooking equipment in real time; the humidity sensor can be used for cooking modes that are sensitive to humidity (such as steaming and baking mode); the air flow sensor can be used to understand the internal air flow of the cooking equipment, and the air flow condition affects the thermal efficiency and temperature distribution of the cooking equipment.

[0035] In an optional embodiment, the telescopic structure includes a telescopic rod and a driving device connected to the telescopic rod, the temperature sensor, the humidity sensor and the air flow sensor are all arranged on the telescopic rod, and the driving device drives the telescopic rod to extend and retract in the cooking cavity.

[0036] Beneficial effect: When the telescopic rod is in the storage state, the sensor assembly is located on the fixed bracket outside the inner cavity of the cooking device, the telescopic rod is in the retracted state, and the sensor assembly is away from the high temperature area of ​​the cooking device. When in use, that is, after the user selects the cooking mode through the control panel, the control system starts the driving device to extend the telescopic rod and move the sensor assembly from the outside of the inner cavity of the cooking device to the center of the inner cavity. At this time, the sensor assembly starts to detect the temperature inside the cooking device and feeds the data back to the control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A flow chart of a method for controlling a cooking device according to an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the structure of a cooking device according to an embodiment of the present invention;

[0040] Figure 3 This is a structural block diagram of a control device for a cooking device according to another embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 100. Cooking equipment;

[0043] 10. Cabinet; 11. User interface;

[0044] 21. telescopic rod; 22. driving device;

[0045] 30. Control device; 31. Acquisition module; 32. Calculation module; 33. Adjustment module. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "inside", "upper", "outer", "lower", "bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixed connection, detachable connection, or integrated connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can also be the connection between two components, it can be wireless connection, or it can be wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Regarding the technical issues of poor energy consumption management and time management of cooking equipment, the relevant technology is to monitor the environmental parameters in the cooking equipment before the preheating program starts, and control the fan and air valve to reduce the impact of humidity on temperature during the preheating stage. After reaching the set temperature, the temperature and humidity in the cooking equipment are adjusted in real time by monitoring the humidity parameters and temperature parameters and controlling the operation of the fan and air valve. However, this solution is complex to operate, consumes a lot of energy, and has a poor monitoring effect on time.

[0050] In order to solve the technical problems of poor energy consumption management and time management of cooking equipment in the related art, the present invention proposes to dynamically adjust the preheating power of the cooking equipment according to the environmental parameters of the cooking equipment, the preheating power and the cooking mode set by the user, so as to reduce the preheating time of the cooking equipment and realize the energy consumption management of the cooking equipment while completing the cooking task of the cooking equipment.

[0051] Combine the following Figures 1 to 3 , describing an embodiment of the present invention.

[0052] like Figure 1 As shown, according to an embodiment of the present invention, on the one hand, the present invention provides a control method for a cooking device 100, and the control method for the cooking device 100 includes: acquiring environmental parameters, preheating power and cooking mode of the cooking device 100; calculating the temperature change rate of the cooking device 100 according to the environmental parameters and the preheating power; and adjusting the preheating power of the cooking device 100 in real time according to the cooking mode and the temperature change rate until the real-time temperature of the cooking device 100 meets the set temperature of the cooking mode.

[0053] In this embodiment, the control method of the cooking device 100 proposed in this embodiment can dynamically adjust the preheating power of the cooking device 100 according to the environmental parameters of the cooking device 100, the preheating power and the cooking mode set by the user, thereby reducing the preheating time of the cooking device 100 and realizing energy consumption management of the cooking device 100 while completing the cooking task of the cooking device 100.

[0054] Specifically, the control method of the cooking device 100 provided in the embodiment of the present application monitors the temperature change rate inside the cooking device 100 in real time, and compares it with the set temperature of the preset cooking mode; then, the preheating power of the cooking device 100 is dynamically fine-tuned according to the temperature change trend of the cooking device 100, so as to ensure that the temperature of the cooking device 100 rises quickly and smoothly to the set value of the preset cooking mode, thereby achieving the goal of ensuring the preheating speed while optimizing the preheating power of the cooking device 100 through an algorithm, thereby reducing the energy consumption of the cooking device 100 and optimizing the preheating time of the cooking device 100.

[0055] The user inputs the cooking mode corresponding to the cooking ingredients, the cooking mode (the cooking ingredients include roast chicken, bread, cake, etc.), the desired preheating temperature and the preheating completion time to the cooking device 100 through the user interface 11. The cooking device 100 stores a cooking mode database: including cooking parameters of different foods, such as the best preheating temperature, preheating time and ideal cooking temperature of the ingredients.

[0056] In some embodiments, calculating the temperature change rate of the cooking device 100 according to the environmental parameters and the preheating power specifically includes:

[0057]

[0058] in, represents the temperature change rate, P represents the preheating power, hA(T(t)-T env ) represents the convective heat transfer loss between the cooking device 100 and the environment, T(t) represents the real-time temperature, Tenv represents the ambient temperature, P represents the preheating power, V represents the volume of the cooking device 100, ρ represents the air density, cp represents the specific heat capacity of air, h represents the convective heat transfer coefficient, and A represents the surface area of ​​the cooking device 100.

[0059] In the above embodiment, a mathematical model of the temperature rise of the cooking device 100 is established according to the cooking mode and real-time environmental parameters of the cooking device 100, and the mathematical model is used to describe the temperature rise process of the cooking device 100 under different cooking modes and real-time environmental parameters.

[0060] Specifically, the mathematical model assumes that the cooking device 100 can be heated uniformly, assumes that the internal temperature of the cooking device 100 is uniformly distributed, and ignores the heat loss of the cooking device 100, assumes that the heat loss of the cooking device 100 can be ignored, or processed by boundary conditions, and within a certain range, assumes that the temperature change of the cooking device 100 is linear, and assumes that the heat provided by the heating element of the cooking device 100 is constant.

[0061] In some embodiments, until the real-time temperature of the cooking device 100 satisfies the cooking mode specifically includes: obtaining the real-time temperature T(t) of the cooking device 100,

[0062]

[0063] In this embodiment, it is assumed that the cooking device 100 is a small oven:

[0064] V=0.1m3、A=0.6m2、P=1500W、T0=20℃、Tenv=20℃、h=10W / m2℃Substitute the above data into the parameters in the above formula:

[0065]

[0066] Simplified:

[0067] T(t)=20+250(1-e -0.4975t )

[0068] This formula can be used to predict the temperature changes of the oven at different time points.

[0069] In some embodiments, the control method of the cooking device 100 further includes: adjusting the convection heat transfer coefficient h and the preheating power P by measuring the temperature change curve of the cooking device 100 under different cooking modes.

[0070] In the above embodiment, in actual application, each parameter in the above model can be calibrated in real time through experimental data to improve the accuracy of each parameter in the above model. For example, by measuring the temperature change curve under different cooking modes, the convection heat transfer coefficient h and the preheating power P can be adjusted so that the above model can better fit the actual working data of the cooking device 100.

[0071] In some embodiments, adjusting the convective heat transfer coefficient h and the preheating power P specifically includes: initializing parameters: T(0)=T0, t=0; updating the real-time temperature T(t) of the cooking device 100 in each time step △t; solving the change of the real-time temperature T(t) by the explicit Euler method, and stopping the iteration when T(t)≥Ttarget, where Ttarget represents the set temperature of the cooking mode.

[0072] In the above embodiment, the preheating power output of the cooking device 100 is dynamically adjusted according to the prediction result of the real-time temperature by the cooking device 100. For example, the cooking device 100 is preheated at the maximum power at the beginning. When the cooking device 100 approaches the set temperature of the cooking mode, the preheating power of the cooking device 100 is reduced to avoid overheating of the cooking device 100.

[0073] Furthermore, the algorithm of the above model is used to predict the preheating power and preheating time required for the cooking device 100 to reach the set temperature. At the same time, it is necessary to take into account the heat dissipation of the cooking device 100 and the impact of the ambient temperature on the cooking device 100, so as to achieve the purpose of taking into account the preheating time and energy consumption of the cooking device 100.

[0074] In some embodiments, adjusting the preheating power of the cooking device 100 in real time according to the cooking mode and the temperature change rate also includes: obtaining the humidity parameters and air flow parameters of the cooking cavity of the cooking device 100; and correcting the preheating power in real time according to the humidity parameters and the air flow parameters.

[0075] In this embodiment, the air flow sensor detects the air flow in the inner cavity of the cooking device 100. If the temperature of the inner cavity of the cooking device 100 reaches equilibrium, the air flow in the inner cavity is small, which is used to assist in determining the temperature state of the inner cavity. For example, if the cooking device 100 uses the "steaming and baking mode", a humidity sensor is required to determine whether the humidity in the inner cavity reaches the target value, so that the cooking device 100 can work according to the cooking mode selected by the user.

[0076] In some embodiments, adjusting the preheating power of the cooking device 100 in real time according to the cooking mode and the temperature change rate also includes: obtaining the preheating time corresponding to the cooking mode; and correcting the preheating power in real time according to the preheating time.

[0077] In this embodiment, the cooking device 100 adopts PID control, and adopts a proportional-integral-differential (PID) controller to adjust the preheating power of the cooking device 100 according to the deviation between the set temperature and the real-time temperature, so as to ensure that the real-time temperature of the cooking device 100 can be stably close to the set temperature;

[0078] Furthermore, the cooking device 100 can also adopt fuzzy logic control. For more complex cooking mode requirements, a fuzzy logic controller can be used to handle uncertain factors in the cooking process, so that the cooking device 100 can make decisions that are closer to human intuition.

[0079] like Figure 2 and Figure 3As shown, in a second aspect, the present invention provides a cooking device 100, the cooking device 100 includes a control device 30, and the control device 30 includes: an acquisition module 31, used to acquire environmental parameters, preheating power and cooking mode of the cooking device 100; a calculation module 32, used to calculate the temperature change rate of the cooking device 100 according to the environmental parameters and the preheating power; an adjustment module 33, used to adjust the preheating power of the cooking device 100 in real time according to the cooking mode and the temperature change rate, until the real-time temperature of the cooking device 100 meets the set temperature of the cooking mode.

[0080] In this embodiment, the control method of the cooking device 100 proposed in this embodiment can dynamically adjust the preheating power of the cooking device 100 according to the environmental parameters of the cooking device 100, the preheating power and the cooking mode set by the user, thereby reducing the preheating time of the cooking device 100 and realizing energy consumption management of the cooking device 100 while completing the cooking task of the cooking device 100.

[0081] like Figure 2 and Figure 3 As shown, in some embodiments, the cooking device 100 also includes: a box body 10, a cooking cavity is formed inside the box body 10; a telescopic structure, the telescopic structure is arranged in the box body 10 and can be telescoped in the cooking cavity; a sensor component, the sensor component is arranged in the telescopic structure, and the sensor component includes a temperature sensor, a humidity sensor and an air flow sensor.

[0082] In this embodiment, the internal temperature of the cooking device 100 is monitored in real time through a temperature sensor; the humidity sensor can be used for cooking modes that are sensitive to humidity (such as steaming and baking mode); the air flow sensor can be used to understand the internal air flow conditions of the cooking device 100, and the air flow conditions have an impact on the thermal efficiency and temperature distribution of the cooking device 100.

[0083] like Figure 2 and Figure 3 As shown, in some embodiments, the telescopic structure includes a telescopic rod 21 and a driving device 22 connected to the telescopic rod 21, the temperature sensor, the humidity sensor and the air flow sensor are all arranged on the telescopic rod 21, and the driving device 22 drives the telescopic rod 21 to extend and retract in the cooking cavity.

[0084] In this embodiment, when the telescopic rod 21 is in the storage state, the sensor assembly is located on the fixed bracket outside the inner cavity of the cooking device 100, the telescopic rod 21 is in the retracted state, and the sensor assembly is away from the high temperature area of ​​the cooking device 100. In the use state, that is, after the user selects the cooking mode through the control panel, the control system starts the driving device 22 to extend the telescopic rod 21 and move the sensor assembly from the outside of the inner cavity of the cooking device 100 to the center of the inner cavity. At this time, the sensor assembly starts to detect the temperature inside the cooking device 100 and feeds the data back to the control device 30.

[0085] In the reset state, that is, after the preheating mode ends, the control device 30 issues a command to start the driving device 22, and the driving device 22 retracts the telescopic rod 21 to move the sensor assembly from the center of the inner cavity of the cooking device 100 to the fixed bracket outside the inner cavity.

[0086] Specifically, the telescopic rod 21 can adopt an electric push rod or a pneumatic push rod with sufficient thrust and pulling force. At the same time, to prevent the telescopic rod 21 from over-extending or contracting, limit switches are installed at both ends of the telescopic rod 21.

[0087] Furthermore, in order to ensure the normal operation of the control device 30, the control device 30 has a fault detection function. Once the driving device 22 or the telescopic rod 21 is found to be abnormal, an alarm is issued in time and the operation is stopped.

[0088] The structure and control method of the cooking device 100 of the present application are explained below through specific embodiments of the present application.

[0089] Taking the cooking device 100 as an oven as an example, the oven mainly includes an oven body, a temperature and humidity sensor, an air flow sensor and a user interface 11.

[0090] The user interface 11 is placed above the oven for easy operation by the user. The temperature and humidity sensor and the air flow sensor are integrated modules and are arranged inside the oven. The sensor is a fragile device and is easily damaged when in a high temperature environment for a long time. Therefore, when it is not needed, it is stored outside the inner pot of the oven; when it is needed, it is placed in the middle of the inner pot through the telescopic rod 21.

[0091] When the user selects the preheating function and selects the cooking information (such as food type, desired preheating temperature, and desired preheating time), the temperature sensor detects the real-time temperature of the inner pot to determine whether it has reached the target value; the air flow sensor detects the air flow in the inner pot. If the temperature of the inner pot reaches equilibrium, the air flow is small, which helps to determine the temperature state in the inner pot. If the "steam and bake" mode is required, the humidity sensor is required to determine whether the humidity in the inner pot has reached the target value.

[0092] The operating system of the oven is integrated with a cooking database, which stores preheating times for various common foods. When the user selects a specific type of food, the user is prompted to select a suitable preheating temperature and preheating time through the user interface 11, thereby improving the user's convenience.

[0093] The temperature sensor detects the temperature data of the inner tank in real time, and adjusts the power output and working time of the heating tube in real time according to the temperature rise curve and the algorithm. This can avoid the preheating temperature being too high and the working time being too long, so as to achieve energy management.

[0094] The algorithm for adjusting the power output and time of the heating tube can adopt PID regulation. The difference between the temperature data collected in real time by the temperature sensor and the expected data can be used to dynamically adjust the operation of the heating tube, and finally the preheating power of the oven can be optimized through the algorithm, thereby reducing the energy consumption of the oven and optimizing the preheating time of the oven.

[0095] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for controlling a cooking device, characterized in that: The control method of the cooking device comprises: Obtaining environmental parameters, preheating power and cooking mode of the cooking device; Calculating the temperature change rate of the cooking device according to the environmental parameters and the preheating power; The preheating power of the cooking device is adjusted in real time according to the cooking mode and the temperature change rate until the real-time temperature of the cooking device meets the set temperature of the cooking mode.

2. The control method of the cooking device according to claim 1, characterized in that: Calculating the temperature change rate of the cooking device according to the environmental parameters and the preheating power specifically includes: in, represents the temperature change rate, P represents the preheating power, hA(T(t)-T env ) represents the convective heat transfer loss between the cooking equipment and the environment, T(t) represents the real-time temperature, Tenv represents the ambient temperature, P represents the preheating power, V represents the volume of the cooking equipment, ρ represents the air density, cp represents the specific heat capacity of air, h represents the convective heat transfer coefficient, and A represents the surface area of ​​the cooking equipment.

3. The control method of the cooking device according to claim 2, characterized in that: The step of waiting until the real-time temperature of the cooking device satisfies the cooking mode specifically includes: Obtaining the real-time temperature T(t) of the cooking device, 4. The control method of cooking equipment according to claim 3, characterized in that: The control method of the cooking device also includes: The convection heat transfer coefficient h and the preheating power P are adjusted by measuring the temperature change curve of the cooking device under different cooking modes.

5. The control method of cooking equipment according to claim 4, characterized in that: The adjusting of the convective heat transfer coefficient h and the preheating power P specifically includes: Initialization parameters: T(0)=T0, t=0; In each time step Δt, updating the real-time temperature T(t) of the cooking device; The change of the real-time temperature T(t) is solved by the explicit Euler method. When T(t)≥Ttarget, the iteration is stopped. Wherein, Ttarget represents the set temperature of the cooking mode.

6. The control method of a cooking device according to any one of claims 1 to 5, characterized in that: The real-time adjustment of the preheating power of the cooking device according to the cooking mode and the temperature change rate also includes: Acquiring humidity parameters and air flow parameters of a cooking cavity of the cooking device; The preheating power is corrected in real time according to the humidity parameter and the air flow parameter.

7. The control method of a cooking device according to any one of claims 1 to 5, characterized in that: The real-time adjustment of the preheating power of the cooking device according to the cooking mode and the temperature change rate also includes: Obtaining the preheating time corresponding to the cooking mode; The preheating power is corrected in real time according to the preheating time.

8. A cooking device, characterized in that: The cooking device is used to implement the cooking device control method according to any one of claims 1 to 7, and the cooking device includes a control device, and the control device includes: An acquisition module, used to acquire environmental parameters, preheating power and cooking mode of the cooking device; A calculation module, used for calculating the temperature change rate of the cooking device according to the environmental parameters and the preheating power; The adjustment module is used to adjust the preheating power of the cooking device in real time according to the cooking mode and the temperature change rate until the real-time temperature of the cooking device meets the set temperature of the cooking mode.

9. The cooking device according to claim 8, characterized in that The cooking device also includes: A box body, wherein the interior of the box body forms a cooking cavity; A telescopic structure, which is arranged on the box body and can be telescoped in the cooking cavity; A sensor component is arranged on the telescopic structure, and the sensor component includes a temperature sensor, a humidity sensor and an air flow sensor.

10. The cooking device according to claim 9, characterized in that The telescopic structure includes a telescopic rod and a driving device connected to the telescopic rod. The temperature sensor, the humidity sensor and the air flow sensor are all arranged on the telescopic rod. The driving device drives the telescopic rod to extend and retract in the cooking cavity.

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